The Samsung deal is one of the biggest office leases signed in North Texas so far in 2018.

"They have the ability to have their own building in the project and room to grow," Fleiss said. "They love the feeling of the building, the amenities and our food hall.

"Another of the things that sold Samsung was we completed an almost 15,000-square-foot conference center open to all of our tenants."

Samsung is one of the largest employers in Richardson's Telecom Corridor and first leased its current building on Lookout Drive in the 1990s.

Since then, the Korean company has consolidated the headquarters for its sales operation, Samsung Telecommunications America, in the Richardson location. The company also has a large distribution outlet in Coppell.

"Texas has been an important market for our business for many years, and we are continuing our commitment to the region by investing in a new office space at Legacy Central," Tim Baxter, president and CEO of Samsung Electronics North America, said in a statement. "This move not only provides us with an opportunity to create an improved workplace experience for our North Texas employees, but it truly showcases our investment in our Texas roots."

Samsung will join other major companies that have shifted thousands of office jobs to Plano.

"It is a pivotal moment to have a company the magnitude of Samsung be the catalyst that helps create a vibrant mixed-use development at Legacy Central," Plano Mayor Harry LaRosiliere in a statement.

With the Samsung lease, Regent Properties is pushing ahead with the redevelopment of a third large office building in its Plano project to accommodate more office tenants.

"We have several large leases in the works," Fleiss said. "We have already completed the demolition on the next building and have started improvement work on it."

Construction is also underway on a parking garage and the food hall in the project on the west side of Highway 75. And developer Trammell Crow Residential recently started work on the first apartments in Legacy Central.

Fleiss said his firm is in talks with hotel companies that want to build in the project.

"We are wonderfully deluged with interest right now," he said.

While most of the new major employers — including Toyota, Liberty Mutual Insurance and JPMorgan Chase — have settled in new buildings in West Plano. Regent Properties' Legacy Central development was designed to offer less costly offices on the east side of the city.